On Wednesday, July 13, 2022 at 06:16:15 PM GMT+2, James Almer
wrote:
On 7/13/2022 12:54 PM, Marco Vianini wrote:
> Sorry, my mail client was using html format.
> I hope now the mail will be sent correctly.
>
>
> You can get a very big improvement of performances in the special (but
On 7/13/2022 12:54 PM, Marco Vianini wrote:
Sorry, my mail client was using html format.
I hope now the mail will be sent correctly.
You can get a very big improvement of performances in the special (but very likely) case of:
"(dst_linesize == bytewidth && src_linesize == bytewidth)"
In this
On Wednesday, July 13, 2022 at 05:08:27 PM GMT+2, Paul B Mahol
wrote:
On Wed, Jul 13, 2022 at 5:02 PM Marco Vianini <
marco_vianini-at-yahoo...@ffmpeg.org> wrote:
> I did following tests on Windows 10 64bit.I compiled code in Release.
> I copied my pc camera frames 1000 times (reso
On 13.07.2022 11:38, Marco Vianini wrote:
You can get a very big improvement of performances in the special (but very likely) case of:
"(dst_linesize == bytewidth && src_linesize == bytewidth)"
Isn't all that matters dst_linesize == src_linesize, and then you can
memcpy() the whole plane?
On Wed, Jul 13, 2022 at 5:02 PM Marco Vianini <
marco_vianini-at-yahoo...@ffmpeg.org> wrote:
> I did following tests on Windows 10 64bit.I compiled code in Release.
> I copied my pc camera frames 1000 times (resolution 1920x1080):
> With Coalesce (MY PATCH):copy_cnt=100 size=1920x1080
> tot_time
I did following tests on Windows 10 64bit.I compiled code in Release.
I copied my pc camera frames 1000 times (resolution 1920x1080):
With Coalesce (MY PATCH):copy_cnt=100 size=1920x1080 tot_time_copy(us)=36574
(average=365.74)copy_cnt=200 size=1920x1080 tot_time_copy(us)=78207
(average=391.03
On Wed, Jul 13, 2022 at 11:38 AM Marco Vianini <
marco_vianini-at-yahoo...@ffmpeg.org> wrote:
> You can get a very big improvement of performances in the special (but
> very likely) case of: "(dst_linesize == bytewidth && src_linesize ==
> bytewidth)"
>
> In this case in fact We can "Coalesce row
You can get a very big improvement of performances in the special (but very
likely) case of: "(dst_linesize == bytewidth && src_linesize == bytewidth)"
In this case in fact We can "Coalesce rows", that is using ONLY ONE MEMCPY,
instead of a smaller memcpy for every row (that is looping for heig
